Northern Turkana, Southern Turkana. Inherently intelligible of Toposa [toq] speakers, but hostile to them. Partially intelligible of Ng’aKarimojong [kdj], Jie [kdj], and Nyangatom [nnj], but all 5 are ethnically distinct. A few phonological, lexical, and discourse marker differences between them. Northern Turkana [tuv] and Eastern Toposa [toq] are reportedly more similar to Southern Turkana [tuv], but Western Toposa [toq] is further apart linguistically. The 4 varieties form a subgroup divided in the middle by the Kenya-Sudan border. Lexical similarity: 85% similarity with Ng’aKarimojong [kdj], 76% with Teso [teo].